# Borislav Petkov uses AI to clean up AMD Zen detection in Linux kernel

Digest AI · Enterprise & Industry · published 2026-10-22T19:54:43Z

Canonical: https://digestai.news/story/borislav-petkov-uses-ai-to-clean-up-amd-zen-detection-in-linux-kernel

## Summary

An RFC posted to the Linux kernel mailing list seeks to tidy the AMD Zen micro‑architecture detection code, which governs generation‑specific paths such as Zen 3 through Zen 5.  AMD Linux engineer Borislav Petkov said he asked an AI for suggestions, received a detailed blurb, and implemented the core idea in a patch that adds range‑check macros for Zen generations.

The initial changes make it clearer which Zen generations a given code path applies to and simplify future extensions, including possible support for pre‑Zen CPUs.  Petkov plans to test the patch on real hardware after a successful VM boot, and notes that a broader feature flag (X86\FEATURE\ZEN) will remain for marking all Zen CPUs in a later update.

## Key points

- RFC on the Linux kernel mailing list proposes cleaning up AMD Zen micro‑architecture detection.
- AMD engineer Borislav Petkov used AI to generate range‑check code for Zen 3‑5 CPUs.
- Patch clarifies generation handling and could be extended to pre‑Zen processors.

## Why it matters

Shows how AI can accelerate low‑level systems code maintenance, potentially speeding up kernel development and improving hardware support.

## Sources

1. [AI helping to improve Linux's AMD Zen CPU microarchitecture detection](https://phoronix.com/news/Linux-AMD-Zen-AI-Detection) (phoronix.com, 2026-10-22)

## Cite

Digest AI, "Borislav Petkov uses AI to clean up AMD Zen detection in Linux kernel", 22 October 2026, https://digestai.news/story/borislav-petkov-uses-ai-to-clean-up-amd-zen-detection-in-linux-kernel

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